The intensity calculation of the gas absorption line by multi-line Voigt fitting

• 来源期刊: 煤炭学报(英文版)
• 年，卷（期）: 2008,（4）
• 页码范围: 534-537
• 页数: 4页
• 语种: 英文

摘要

Adopted the distribution feedback type (DFB) laser to measure the coal minegas methane,according to the methane located 1.6 pm nearby 2 v3 with a R9 direct ab-sorption spectrum,attraction wire intensity of each line was calculated through the multi-line Voigt fitting.The experimental result indicates that in the obtained four attraction recover of wire,the maximum deviation is 2.7%,and the minimum deviation is 0.02%,other results are all in experimental error scope.This research method may apply in the spectrum survey methane gas density,it has characteristics including high precision,strong selectivity,fast response and so on.